| 用超限率分析法提取精河6.6级地震前的高频信号异常 |
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| 引用本文： | 高丽娟,李尚伟,滕海涛.用超限率分析法提取精河6.6级地震前的高频信号异常[J].中国地震,2019,35(1):117-125. |
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| 作者姓名： | 高丽娟 李尚伟 滕海涛 |
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| 作者单位： | 新疆维吾尔自治区地震局, 乌鲁木齐 830011,新疆维吾尔自治区地震局, 乌鲁木齐 830011,新疆维吾尔自治区地震局, 乌鲁木齐 830011 |
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| 基金项目： | 2018年震情跟踪定向工作任务（2018010210）、中国地震局地震科技星火计划项目（XH19049）共同资助 |
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| 摘 要： | 2017年精河MS6.6地震震前,尼勒克台、巩留台和小泉沟台钻孔应变仪记录到了显著的高频信号异常变化,经现场异常落实确认异常是可靠的。本文通过超限率分析方法提取类似信号,定量描述了震前异常信号强度,结果表明地震前3个台不同程度出现超阈值现象,异常显著,其中2个台为临震变化。
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| 关 键 词： | 精河MS6.6地震 定点形变 超限率分析 高频信号 地震前兆 |
| 收稿时间： | 2018/8/27 0:00:00 |
| 修稿时间： | 2019/2/14 0:00:00 |
Extracting High Frequency Signal Anomalies before the Jinghe MS6.6 Earthquake with Overrun Rate Analysis |
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| Gao Lijuan,Li Shangwei and Teng Haitao.Extracting High Frequency Signal Anomalies before the Jinghe MS6.6 Earthquake with Overrun Rate Analysis[J].Earthquake Research in China,2019,35(1):117-125. |
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| Authors: | Gao Lijuan Li Shangwei and Teng Haitao |
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| Affiliation: | Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China,Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China and Earthquake Agency of Xinjiang Uygur Autonomous Region, Urumqi 830011, China |
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| Abstract: | Before the MS6.6 earthquake happened in Jinghe, the borehole strain gauges of Nilka, Gongliu and Xiaoquangou seismic stations recorded significant abnormal changes in high-frequency signals, and it was reliable to confirm the abnormalities through on-site abnormalities. In this paper, the similar signals are extracted by the over-limit rate analysis method, and the abnormal signal intensity before the earthquake is quantitatively described. the results show that the super-threshold phenomenon occurs in different degrees before the earthquake, and the anomaly is remarkable. Two of them are changes in the impending earthquake. |
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| Keywords: | Jinghe MS6 6 Earthquake Fixed point deformation Overrun rate analysis High frequency signal Earthquake precursor |
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